Electromagnetic selective device.



, 3 M. m ..9H m 1MB 5 n CC u MH 4 n6 m a P W. S. BURNETT. ELECTROMAGNETIC SELECTIVE DEVICE. APPLICATION FILED AUG. 23, 1909 1 1 1 9,68 1

W. S. BURNETT.

ELECTROMAGNETIC SELECTIVE DEVICE. APPLIGATIONTILBD AUG.23V, 1909.

L1 1 9,681 Patented Dec. 1, 1914.

6 SHEETS-SHEET 24 W. S. BURNETT. ELECTROMAGNETIC SELECTIVE DEVICE.

APPLICATION FILED AUG. 23, 1909.

Patented Dec. 1, 1914.

6 SHEETSSHEBT 3.

' gvwantoi K g zafib W. S. BURNETT.

ELECTROMAGNETIC SELECTIVE DEVICE.

APPLICATION FILED AUG.Z3,1909.

Patented Dec. 1, 1914.

6 SHEETS-SHEET 4.

amihwooea W. S. BURNETT.

ELECTROMAGNETIC SELECTIVE DEVICE APPLICATION FILED AUG.23,1909.

1,1 1 9,681 Patented De0.1,1914.

6 SHEETS-SHEET 5.

abhor/nu: g

W. S. BURNETT.

I ELECTROMAGNETIC SELECTIVE DEVICE.

: APPLICATION FILED AUG. 23, 1909. 1,1 1 9,681. Patel'lted Dec. 1, 1914.

e SHEETSw-SHEET s.

-Milwaukee, county of Milwaukee, and State WILLIAM s. BURNETT, 0E MILWAlTKEE, WISCONSIN, ASSIGNOR r0 'MoRsE'coDE'sIGngL 00., 0E MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN. 1 f

I ELECTROMAGNETIC SELECTIVE nEvIc 1,1 19,681. Specification of Letters Patent. 9 I P t t d g 1,

Application filed August 23, 1909. Serial No. 514,131. I

electro-magnets of different. striictlirare disclosed from thoseillustrated in connee tion with this application and the; working parts of the apparatus herein "illustrated To all who mat may-concern: Be it known that I, WILLIAM S. BUnNE'r'r, a citizen of the United States, residing at of Wisconsin,- have invented new and useful Improvements in Electromagnetic Selective Devices, of which the following is a specification. .1 v I My invention relates to improvements in electro-magnetic selective devices.

The object of my invention is to provide means for operating controlling mecha: nisms at any one of a series of stations along a single line of electrical conduction to the exclusion of the other, said control-T ling mechanism'beingemployed for any; desired purpose, such for example, as the operation of signal unlocking or locking mechanism.

In the following description. reference is vided with a clapper weight 13, whereby a"'75 had to the accompanying drawings, in vibration of armature 5 will cause the bell hi h I V a to sound. p a a- Figure 1 is a side elevationof the appa: The armature 3 is employed to actuate a" ratusused at a local or controlled station. selecting wheel 15 through an arml7 rig Fig. 2 is a rear elevation of the same, showidly connected with ahub 18fonsa'id armaing the parts as they appear at an unseture and through the pawls 19,, ratchet" lected station during a signal unlocking op- -me1nber 20 and shaft 21. The ratchet .mem eration at a selected station. Fig. 3 is a ber 20 and selecting wheel-:15 are both rigi T detail view?- of, a detached portion of the idly connected with the shaft 21. Analter; mechanism. shown .in Fig. 2, showingthe natingcurrent being employed, itsreversal parts innormal position. Fig. 4 is a simiin polarity causes the armature 3 to'yi'brate. lar \iew,. showing the parts in station se- This vibratory movement is utilized to aota e lecting positiompreparatory to the. unlock-. ate the ratchet 20 and th'eselectin'g wheel ing operation. Fig. .5 is a. detail side View 15 which will be more clear from an otthe selecting magnet, armatures with spection of Fig. 5. The selecting WheeLis their supporting connections, signaling ap-' provided with one or more notches 22ywhich paratus, and the selecting wheel and its when the wheel is-in selective,position, wil pawl and ratchet actuator. Fig. 6 1s aplan permit of an unlocking operation .for, re View of the same, showing also the selecting leasing the bell clapper arm 11 as been I magnets. Fig. 7 is a detail rear view of after described. the unlocking shoe, showing the guard fin- [A resilient locking arm 27 is provided gel in cross section. F ig. 8 is a front view with a pro]ection 29 adapted to normally of the same. Fig. 9 is a diagrammatic engage an arm 30,which is rigidly conneet p view of a series of instruments connected at ed with the rod 7 thereby preventing the different stations with a single line of conrod 7' and armature 5 from VibratingH'ndQlQO duction and Fig. 10 is a sectional view on line a-a of Fig. 5. I

Like parts are identified, by the same reference charactees throughout a the several views. I I

The generalfeatnres of the apparatus described and claimed herein are shown and described, but nclt claimed, in my former application filed Apr-hi2, 1909, Serial No. 39,319, in which application, however,

are somewhat difi'erent: in structure, at though operating on" the 'same general prine ciple as the i 7 application.

parts disclosed in said 'pl'eViOliS In the drawings of this pl fi g g ordinary electro-magnet 1, having two sets of coils, as shown, is employedas' a select;

ing magnet.v This magnet is providedwiith two vibrating .armatures :3 and 5 reap r,

t-ivel'y, the armature 3 being centrally pivot; ed vupon a" supporting rod 'l, which ,-is mounted in suitable 1 frame bearings: at- 8 and 9. The armature 5 is rigidly connected with the rod 7 and a bell: clapper arm 11 is rigidly connected to the armature 5 and pro-" thus locking the arm ll and bell against signalin'g'movement. The res'ili arm 27 is provided with "a 'segrneii curved lip 33. This lip 33 is provided:

anangularly disposedhook shaped endper to I extends downwardly beyond the hook and then rearwardly and upwardly as best shown in Figs. 1 and 2.

A bell unlocking el'ectro-magnet at 40 has pole pieces 41 extended, and an armature 42 is pivoted at 43 between the pole pieces, oneend of the'armature being heavier than the other, whereby it normally assumes an angular position, as shown in'Fig. 3, but may be swung to a horizontal position by the magnetic pull of said pole pieces, when the Hiflgnet'is energized. The reversals of the magnetism through the pole. pieces 41 -do not cause. a vibration of armature 42 as any sufiicientmagnetization will cause the armature to aline itself with the pole pieces,

the interval of time, ifthere be any, between the pulsations used for setting purposes not being long enough Ito permit retraction of this armature between. pulsations or impulses. This armature carriesan arm 45,

"which extends radially from its pivotal axis 1 and is provided with a projection 47 adapted to enter the notch 22 in the selecting wheel 15, or to bear upon the periphery and limit the swinging movement of the armature when not in registry with the notch. An other arm 50 is also axially connected with the armature and carries a stop, 51, which, when the armature is actuated by ,the magnet 40, moves to a position in the path of one are having the armature axis as a center.

When so swun the finger travels along the rear surface 0% proximity to the shoe 35, and when the proection 47 enters a notch 22 in the selecting wheel, the right hand or heavier end of the armature swings downwardly to such an extent as to carry the finger'55 over the shoe 35 to a point between it and the guard finger 38, as shown in Fig. 4, the finger contacting with and pushin theshoe forwardly, (inwardly-toward the. magnet) in passing to such position. As soon as the finger passes the shoe, the latter springs rearwardly across the path of the finger so that the finger will engage the front surface of the shoe during its next upward movement. When the magnet 40 is again energized, it swings finger 55 upwardly, and it then engages the front surface of the shoe 35 and passes. in front of the shoe and along the hook extremity 36 and front surface of thelip 33, crowding the latter rearwardly or to the left of its position in Fig. 1 to a sufiicient extent to disenthe lip 33v into and out of gage the latch projection 29 from the arm 30, thus unlocking the bell clapper and permitting an oscillation of armature 5, rod 7, and clapper rod 11. The bell will then continue to sound while the alternating current is maintained. When the magnet 40 is again deenergized, by interrupting the circuit or'by a cessation in current production, the gravity tilting movement of the armature 42 will swing finger 55 downwardly. But during the bell clapper releasing movement, it moved past and above the hook extremity 36 pushing the latter rearwardly in passing. The part' 36, by its resilient reaction, then extends across the path of finger 55, and as this finger moves downwardly it is guided through the opcning'to normal position in the rear of shoe 35, as shown in Fig. 3. Thisleaves the arm 27 again free to swing forwardly to normal locking position with projection 27 in engagement with arm 30, as shown in Fig. 1. It will therefore be understood that the extreme tilting movement of the armature 42 at a selected station causes finger 55 to first-force its way downwardly across the rear face of the angularly disposed shoe and then pass upwardly in front'of it to push the lip backwardly and release the bell when thecurrent is resumed. Also that during the upward clapper releasin movement, the finger forces its way past the hook extremity' 36, the function of which is to guide the shoe when the currentagain ceases.

In Fig.- 9, I have illustrated a series of stations B, C, D, connected in series with one central stationprovided with apparatus, such as an alternating current generatonor magneto A for producing'and reversing the current. Each of the stations is provided with a selecting wheel 15, thevarious selecting wheels 15 at the different stations being provided at different angular positions with notches 22 corresponding respectively to the different stations. 1

To operate the. selecting various stations, a current will be set up in the conductor. Armature 3 will then be vibrated to actuate the selective wheel 15 at each station, until the wheel at the desired station reaches a position where projection 47 may register with and enter the notch 22 in suchwheel. If the current then ceases, armature 42 will tilt by gravity, and as the projection 47 then enters notch 22 in the selecting wheel at the station to be called, the finger 55 at that station will move past the margin of shoe 35 and assume a position below and a little to the front of the shoe margin, as shown in Fig. "4. The current being then restored, armature 42 will be swung by magnet 40 to carry finger 55 along the front face .of the shoe and hook extremitv 36 to the front'face of the lip 33,

wheels at the i finger .55 through to the rear side of the,

crowdmg the latter to the rear and unlocking the bell clapper by withdrawing projection 29 froin arm 30, after which, armature 5 is permitted to vibrate and sound the bell. In the meantime, all the ratchet actuators will be in operation to cause the selecting wheels to step around to a position Where the steps 51 will engage arms 53, thus establishing a zero point from which all the selecting wheels will start in a subsequent operation.

Then the current again ceases to flow through the line, the armature 42 at the selected station will again move to tilted position, carrying the finger 55 through the gap between hook extremity 36 and lip 38 to normal positionin the rear of shoe The selecting wheel having moved to zero position, the projection 47 cannot enter the notch therein, and the finger .35 will therefore not move over the margin of the shoe as it did when the station was selected. At all the other stations, the movement of their armatures 42 will merely cause the fingers 55 to vibrate in the rear of the shoe and lip 33 since the down tilting movement of the armatures is not sufficient to carry these fingers over the margin of the shoes.

While I have shown and described the rocking armature as used to operate the unv locking mechanismof a bell sounder, it will beunderstood that this armature movement combination of a series of stations, each hav-' ing an electromagnet provided with a set of vibratory armatures, means for normally locking one of said armatures against vibration, a swinging armature loaded atone end to swing downwardly by gravity, an electromagnet adapted, when energized, to lift the loaded end of said armature, unlocking mechanism operatively connected therewith, and a selecting member actuated from the free armature of the first named magnet and controlling the unlocking operations of the swinging armature by limiting the movement of the latter at all points but one in the field of movement oi the selecting member.

2. In apparatus of the described class, the

' combination of a series of stations each havofvibratory armatures, means for normally locking one of said armatures against vibration, an electro-magnet provided with a swinging armature, and unlocking mechanism operatively connected therewith, a so lecting member actuated from the free armature of the first mentioned magnet and controlling the unlocking operations of the swinging armature. y

3. In apparatus of the described class, the combination of a series of stations each having an electro-rnagn'et provided with a set of vibratory armatures, means for normally locking one of said arm'atures against vibra tion, an, electromagnet provided with a swinging armature, and unlocking mechanism operatively connected therewith, a se lecting member actuated from the free armature of the first mentioned magnet and controlling the unlocking operations of the swinging armature, the selecting members at the different stations being characteristically different and adapted to permit the unloclnngoperations of the swinging arma tures at diiierent intervals at the several stations.

In apparatus of the described class, the combination of a series of electrically connected'stations, a pair of electrically operated vibratory armatures at each station, electro-magnetic means for vibrating the same, means for locking one of the armatures against vibration, electromagnetic mecha- IllSIl'l for unlocking said armature, a selecting Il'18ll1b8l at each station characteristically different from those of the other stations,

said-selecting member controlling the unlocking mechanism, and a device connected with the unlocking mechanism, for arrestingthe operations of each selecting men'iber at a common zero point, the selecting characteristic in each member being at a dili'erent distance from its zero point from that of any other member.

5. In apparatus of. the described class, the combination of a series of electrically connected stations, a pair of electricallyoperated vibratory armatures at each station, electro-magi'i'eticmeans for vibrating the samefmeans for locking one of the armatures against vibration, electro-magnetic mechanism for unlocking said armature, a selecting member at each station characteristically diii'erent from those of the other stations, said selecting membercontrolling the unlocking mec anism, and a device con-' nected with the unlocking mechanism, for arresting the operations of each selecting member at a common zero point unequally distant, in each member, from the selecting characteristic, said unlocking mechanism, con'iprising a. swinging armature, an unlocking finger connected therewith, and a movable member operativ y connected with the lock and provided With a shoe angularly disposed with reference to the plane 'a shoe angularly disposed with reference to the plane of movement of the unlocking member connected with said member, a reciprocating finger adapted to normally swing along one side of said shoe and unlocking member, a rotary selector adapted to normally limit the movement of said linger and provided with a notch adapted in one position to permit the finger to move over the margin of said shoe to a position for engagement with its opposite side, a guard arm for said finger whereby said finger when in such engagement is adapted to move in one direction to actuate said mem her to unlocking position, and in the other direction to pass between said member and shoe to normal position, electromagnetic means for actuating the selector and electroma gnetic means for actuating said finger.

7. In apparatus of the described class, the combination of an electro-magnet, a vibratory armature therefor, a movable member provided with means for locking said armature, when in one position of a liust'nl'ent, a shoe angularly' disposed with erence to the plane of movement of the unlocking member connected with said member, a reciprocating finger adapted to nprmally swing along one side of said shoe and unlocking member,a rotary selector adapted to normally limit the movement of said finger and provided with a notch adapted in one position topermit the finger to move over the margin of said shoe to a position. "for engagement with its opposite side, a guard arm for said finger whereby said fin ger when in such engagement is adapted to movein one direction to actuate said memher to unlocking position, and in the other direction to pass between said member and shoe to normal position, together with electro-magnetic means for actuating the selector, and electromagnetic means for actuating the finger.

SfIn apparatus of the described class, the combination of an electro-magn-et, a vibratory armature therefor, a movable member provided with means for locking'said armature, when in one position of adjustment, a shoe angularly disposed with reference to the plane of movement of the unlocking member connected with said memher, an electrically actuatedreciprocating. finger adapted to normally swing along one sideot said shoe and unlocking member, an electrically actuated rotary selector adapted to normally limit the movementof said fin.-; ger, and provided with anotchadaptedinone position to permit the finger to move over the margin of said shoe to a position for engagement with its opposite side, a guard arm for said finger whereby said: fin ger when in such engagement is adapted to move in one direction to actuate said member to unlocking position, and in the other direction to pass between said member andshoe to normal position, together with a stop connected with said finger, adapted, when the finger is in one position of adjustment, to limit the movement of the selector.

9. In apparatus of the described class, the combination of'a series of stations, each having an electro-magnetic device provided with two vibratory armatures,-a signal operating device under the control ofone of said armatures, means for normally lock-- ing said armature against vibration, a rocking armature and movable mechanism in operative relation thereto, and a selector actuated from the other one of the arma-- tures, and controlling the movable mecha- 1118111. r,

10. In apparatus of the described class, the combination of a series of stations, each having an electro-magnetic device provided with two vibratory armatures, a signal op; erating device under the control of one. of said armaturcs, means for normally locking said armature against vibration, a rocking. armature and movable mechanism in operative relation thereto, and a selector actuated. from the other one of tl'ie-armatures and controlling the movable mechanism, and; means, controlled by the rockingarmatu'res of all the stations 'for arrestingthe move ment of the selectors at a common zero point.

11. The combination with an electro-magnetic step by step mechanism provided with; armature actuating pole pieces andinclud ing an actuating armature, pivoted to swing, alternately at its respective-ends into and. out of proximity to pole pieces of opposite polarity, of an oscillatory armature pivoted to swing at its respective ends simultane ously into and out of proximity 'to pole pieces of opposite polarity, means controlled by the-step by step mechanism for determining the length of the stroke of saidbs cillatory armature,-and a movable signal controlling member mechanically controlled by said oscillatory armature through varia tions in the character of its stroke.

12. The combination with an electromagnetic step by step mechanism provided with armature actuating pole pieces'andineluding an actuating armature, pivoted to swing alternately at its respective ends into and out of proximity to pole pieces of opposite polarity, of an oscillatory armature pivoted to swing at its respective ends si. multaneously into and out of proximity to pole pieces of opposite polarity, means con trolled by the step by step mechanism for determining the length of the stroke of said oscillatory armature, and a movable signal controlling member mechanically controlled said oscillatory armature through variations in the character of its stroke, together with stopping and releasing devices torthe step by step mechanism arranged to provide a zero point from which the step by step movements may originate.

Cir

1:5. 1 he combination with a main line of conduction, of an electrically actuated armature responsive to alternating current impulses to produce motion in two directions, another armature responsive to produce motion in two directions, and a selector, actuated with each movement of the first mentioned armature to control the character of the strokes of the other armature.

14-. The combination with a main line of conduction, of an electrically actuated armature responsive to alternating current impulses to produce motion in two directions, another armature responsive to produce r on in two directions, and a selector, actuated by the first mentioned armature to control the character of the strokes of the other armat re, t 1;geth with a signal control mechanism op. tive during strokes of one character performed by said last mentioned armature.

15. The combination with a main line of conduction, of a series of selectors along said line constituting stations, each selector being rovided with an electrically actuated member selectively responsive to revers in current polarity, another armature and means og'ierated with each movement of the first mentioned armature for controlling the movements of the second.

16. The combination with a main line of conduction, of a series of selectors along said line constituting stations, each selector bein provided with an electrically actuated member selectively responsive "to reversals iii-current polarity, another armature, and means operated by the mentioned armature for controlling llllEIllOYGlllQDtS of the second, together with locking mechanisin at each station controlled by the last mentioned armature.

17. A signaling system having a central station and substations united by a line circuit, a step-by-step signal receiving device having an operating Winding provided at each substation, a step-by-stcp element and two armatures coi perating therewith controlled by said Winding and having means twoarmatures cooperating therewith controlled by said Winding and having means to render same operatively selectively responsive to alternating impulses, and means at the central station to control the operations of said device.

19. A signaling system having a central station and substations united by a line circuit, a step-by-step signal receiving device having an operating Winding provided at each substation, a step-bystep element having means to render same operatively selectively responsive to alternating impulses, said means including an armature adapted to actuate said step-by-step element with each reversal of the current, and means at the central station to control the operations of said device. i

20. A. signaling system having a central station and substations united by a line circuit, av step-by-step signal receivingdevice having an operating winding provided at each substation, a condenser in series with each winding, a step-bv-step element having means to render same operatively selectively responsive to alternating impulses, and means at the central station to control the operations of said device.

21. A system of the character described comprising a central station and. substations united'by a line circuit, the comb nation with a step-by-step element at each substation, means at the central station for transmitting positive and negative impulses, means to operate said step-bv-step element selectively with each impulse to a selected position, and an electromagnetic device to operate said last aforesaid means.

22. A system of the character described comprising a central station and substations united by a line circuit. the combnation with a step bvstep element at each substation, means at the central station for transm tting positive and negative im ulses. and an escapement mechan sm at each substation to control said step-bv-step e e ment and to operate the same one step with each impulse.

23. A system of the character desc ibed compris ng a central station and substat ons united by a line circuit, the comb nat on with a step-by-step element at each substation. means at the central station for transmitting positive and negative impulses, means to selectively operate said step-bystep elenient in accordance with the polarity of the impressed impulse with each reversal of current, an' electromagnetic device to operate said last aforesaid means, and a condenser in series. with said electromagnetic device.

24. A system of the character described having a central station and substations united by a line circuit, a step-by-step element at each substation, step-by-step means to controlsame, means at the central station for impressing alternating currents on said circuit, an armature for operating said stepby-step element one step with each reversal of current, means to control a signal, an armature controlled by said step-by-step element to control said means, and a Winding to control said armatures.

25.. A system of the characterdescribed having a central station and substations united by a line circuit, a step-by-step ele ment at each substation, step-by-step means to control same, means at the central station for impressing alternating currents on said circuit, an armature for operating said stepby-step element one step With each reversal of current,-means to control a signal, an

step element to control said last aforesaid means, and a Winding to control said armatures.

27. In a system of the character described having a central station and substations united by a line circuit, a step-by-step ele ment atleach substation, step-by-step means to control same, means at the central station for sending positive and negative impulses over said circuit, an armature for operating said step-by-step element With each reversal of current, a device to control a signal, an

armature controlled by said step-by-step element to control said device, a Winding to control said armatures, and a plurality of magnetic circuits associated with said Winding and said armatures.

28. In a system of the character described having a centrai station and substations united by a line circuit, a stepby-step element at each substation, step-by-step means to control same, means at the central station for sending positive and negative impulses over said circuit, an armature for operating said step-by-step element with each reversal of current, a device to control a signal, an

armature controlled by said step-by-step element to control said device, a Winding to control said armatures, a plurality of magnetic circuits associated with said Winding and said armatures, the'first aforesaid armature responding selectively to current 01": opposite polarity, and said last aforesaid armature responding irrespective of the polarity ofcurrent.

29. In a system of the character described having a central station and substations united by a line circuit, a step-by-step element at each substation, step-by-step means to control same, means at the central station for sending positive and negative impulses over said circuit, an armature for operating said step-by-step element With each reversal of current, means to control a signal, an armature controlled by said step-by-step element to control said last aforesaid means, a Winding to control said armatures, a plurality of magnetic circuits associated with said Winding and said armatures, the first aforesaid armature responding selectively to current of opposite polarity, and said last aforesaid armature responding irrespective of the polarity of the current.

30. In a system of the character described having a central station and substations united by a line circuit, a step-by-step element at each substation, means at the central station to transmit alternating current impulses, and electromagnetic means selectively responsive to said impulses to selectively set said element and to actuate the same With each reversal of current.

In testimony whereof I afiiX my signature in the presence of two Witnesses.

WILLIAM S. BURNETT. "Witnesses:

L. C. INHEELER, O. R. ERWIN. 

